CakePHP select default value in SELECT input - php

Question

Using CakePHP:
I have a many-to-one relationship, let's pretend it's many Leafs to Trees. Of course, I baked a form to add a Leaf to a Tree, and you can specify which Tree it is with a drop-down box ( tag) created by the form helper.
The only thing is, the SELECT box always defaults to Tree #1, but I would like it to default to the Tree it's being added to:
For example, calling example.com/leaf/add/5 would bring up the interface to add a new Leaf to Tree #5. The dropdown box for Leaf.tree_id would default to "Tree 5", instead of "Tree 1" that it currently defaults to.
What do I need to put in my Leaf controller and Leaf view/add.ctp to do this?

Answer 1

In CakePHP 1.3, use 'default'=>value to select the default value in a select input:
$this->Form->input('Leaf.id', array('type'=>'select', 'label'=>'Leaf', 'options'=>$leafs, 'default'=>'3'));

Answer 2

You should never use select(), or text(), or radio() etc.; it's terrible practice. You should use input():
$form->input('tree_id', array('options' => $trees));
Then in the controller:
$this->data['Leaf']['tree_id'] = $id;

Answer 3

$this->Form->input('Leaf.id', array(
'type'=>'select',
'label'=>'Leaf',
'options'=>$leafs,
'value'=>2
));
This will select default second index position value from list of option in $leafs.

Answer 4

the third parameter should be like array('selected' =>value)

Answer 5

Assuming you are using form helper to generate the form:
select(string $fieldName, array $options, mixed $selected, array $attributes, boolean $showEmpty)
Set the third parameter to set the selected option.

Answer 6

cakephp version >= 3.6
echo $this->Form->control('field_name', ['type' => 'select', 'options' => $departments, 'default' => 'your value']);

Answer 7

To make a text default in a select box use the $form->select() method. Here is how you do it.
$options = array('m'=>'Male','f'=>'Female','n'=>'neutral');
$form->select('Model.name',$options,'f');
The above code will select Female in the list box by default.
Keep baking...

Answer 8

FormHelper::select(string $fieldName, array $options,
array $attributes)
$attributes['value'] to set which value should be selected default
<?php echo $this->Form->select('status', $list, array(
'empty' => false,
'value' => 1)
); ?>

Answer 9

If you are using cakephp version 3.0 and above, then you can add default value in select input using empty attribute as given in below example.
echo $this->Form->input('category_id', ['options'=>$categories,'empty'=>'Choose']);

Answer 10

The best answer to this could be
Don't use selct for this job use input instead
like this
echo $this->Form->input('field_name', array(
'type' => 'select',
'options' => $options_arr,
'label' => 'label here',
'value' => $id, // default value
'escape' => false, // prevent HTML being automatically escaped
'error' => false,
'class' => 'form-control' // custom class you want to enter
));
Hope it helps.

Answer 11

As in CakePHP 4.2 the correct syntax for a select form element with a default value is quite simple:
echo $this->Form->select(
'fieldname',
['value1',
'value2',
'value3'],
['empty' => '(auswählen)','default'=>1]
);
If hopefully don't need to explain the default=1 means the second value and default=0 means the first value. ;)
Be very careful with select values as it can get a little tricky. The example above is without specific values for the select fields, so its values get numerated automatically. If you set a specific value for each select list entry, and you want a default one, set its specific value:
$sizes = ['s' => 'Small',
'm' => 'Medium',
'l' => 'Large'];
echo $this->Form->select('size', $sizes, ['default' => 'm']);
This example is from the official 4.x Strawberry Cookbook.
https://book.cakephp.org/4/en/views/helpers/form.html#options-for-control